Topological conformal eld theory with a rational W potential and the dispersionless KP hierarchy
نویسندگان
چکیده
We present a new class of topological conformal eld theories (TCFT) characterized by a rational W potential, which includes the minimal models of A and D types as its subclasses. An explicit form of the W potential is found by solving the underlying dispersionless KP hierarchy in a particular small phase space. We discuss also the dispersionless KP hierarchy in large phase spaces by reformulating the hierarchy, and show that the W potential takes a universal form, which does not depend on a speciic form of the solution in a large space. 1
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